I used to follow the Gallup polls for this, because of the long time series and general reputability. But then it turned out they do not have a spine. Since then I always look at the aggregated results at https://www.natesilver.net/p/trump-approval-ratings-nate-silver-bulletin . Every poll has a significant margin of error (depending on sample size) and bias (depending on methodology), so aggregating them is generally a good idea.
I used to follow the Gallup polls for this, because of the long time series and general reputability. But then it turned out they do not have a spine. Since then I always look at the aggregated results at https://www.natesilver.net/p/trump-approval-ratings-nate-silver-bulletin . Every poll has a significant margin of error (depending on sample size) and bias (depending on methodology), so aggregating them is generally a good idea.
Nate Silver is a known POS. I strongly suggest to avoid that. Here is one that lists them all: https://www.realclearpolling.com/latest-polls
ETA: https://www.salon.com/2024/09/06/nate-silver-faces-backlash-for-pro-model-skewing/
G. Elliott Morris used to build 538’s models, and now he does his own. There are Senate and House forecasts there too.